Antiperspirant and deodorant composition containing lamellar substances

ABSTRACT

Antiperspirant and deodorant compositions having enhanced adherence to the skin contain lamellar substances such as natural and synthetic micas and silicates which are insoluble, chemically inert and possess high covering power as well as thermal insulation.

United States Patent 1191 Seilinger 1451 Dec. 2, 1975 [76] Inventor: Alexandre Seilinger, 8, Rue des Beaux Arts, Paris, France 221 Filed: Sept. 13, 1973 1211 Appl. No.: 396,771

[52] U.S. Cl. 424/65; 424/47 [51] Int. Cl. A61K 7/32 [58] Field of Search 424/65, 68

[56] References Cited UNITED STATES PATENTS 1,371,822 3/1921 Tate ..l 424/68 1,558,405 10/1925 Smith... 424/65 x 2,114,599 4/1938 Jones 424/65 2,210,014 8/1940 Teller 424/65 x 2,230,083 1/1941 Montenier 424/68 2,294,140 8/1942 Taylor 424/68 2,350,047 5/1944 Klarmann et al. 424/68 x 2.876.163 3/1959 Garizio Ct 211. 424/68 3,014,844 12/1961 Thiel et al 424/46 3,081,223 3/l963 Gunning 424/46 3,088,874 5/1963 Geary et al. 424/47 $3,325,367 6/1967 Miechowski 424/148 X FOREIGN PATENTS OR APPLICATIONS 987,301 3/1965 United Kingdom 424/47 OTHER PUBLICATIONS Industrial Applications of Mica, Aug. 1950, pp. 1 to 6.

Primary ExaminerSam Rosen Assistant ExaminerDale R. Ore Attorney, Agent, or FirmI-laseltine, Lake & Waters [57] ABSTRACT Antiperspirant and deodorant compositions having enhanced adherence to the skin contain lamellar substances such as natural and synthetic micas and silicates which are insoluble, chemically inert and possess high covering power as well as thermal insulation.

5 Claims, No Drawings ANTIPERSPIRANT ANI) DEODORANT COMPOSITION CONTAINING LAMELLAR SUBSTANCES BACKGROUND OF THE I VENTION The present invention relates to antiperspirant products and those deodorant products which are based entirely or in part on their action in neutralizing the effect of perspiration. Such products have the practical object of alleviating more or less completely the affect of excessive perspiration: moisture in different parts of the body notably armpits, feet and hands, the odor which accompanies it and which can be increased by bacterial fermentation and proliferation, stains resulting therefrom on undergarments, clothing and objects which are handled.

The active substances currently used in such products act in different ways, either by modifying the tonus of the ortho-sympathetic nervous system, or by atrophying in a more or less reversible manner the epithelium of sudoriparous glands, or by a mechanical, astringent, blocking or covering affect on the sudoriparous ducts or pores and being of a temporary duration.

The improvements which are the object of the pres cnt invention relate to the mechanical modes of action and are concerned with products aimed at temporarily blocking or covering the sudoriparous ducts and pores, reducing the perspiration emitted without modification of the physiological glandular function. They are therefore concerned more particularly with hygienic or cosmetic products.

It has been ascertained that the products utilized up to the present with the object of obtaining an astringent, blockin g or covering effect on sudoriparous ducts and pores, and among which may be mentioned citric acid, tannic acid, alum, certain metallic salts, aluminum compounds such as aluminum hydroxides for example, sometimes chlorinated, etc., have an effect of short duration, because they are rapidly diluted or solubilized and carried away by the sudoriparous flow. Since they also have a low coefficient of adherence to the skin, they necessitate frequent and renewed applications, as well as the search for an ever greater concentration of the active ingredient. Secondarily, there results a poor tolerance of the skin, the frequent appearance, notably on sensitive regions such as armpits, of reactions of irritation and various dermatoses and allergic difficulties. These harmful affects have moreover been verified with the different forms used such as solutions, suspensions, powders, creams, sticks, or aerosols.

In order to obviate these serious disadvantages, the present invention proposes to confer on the blocking and covering elements of antiperspirant and deodorant products sufficient epidermic coefficient of adherence to permit prolonged resistance to sudoriparous flow. to avoid too frequent applications, to prevent any possible chemical reaction of the said constituents in contact with the components of perspiration and to thus limit the risk of cutaneous intolerance.

SUMMARY OF THE INVENTION According to this object, the present invention uses active substances with mechanical affects destined to be incorporated in antiperspirant and deodorant compositions characterized in that they are practically insoluble, they have a lamellar structure with peripheral 2 rough places ofdifferent granular size, a good chemical inertness, as well as a high covering power and good thermal insulation. Such substances therefore have a very high coefficient of adherence to the skin and are well tolerated by the skin.

Among these materials there should be notably cited natural and synthetic micas which satisfy all of the above conditions and which will be designated hereafter by the simple name commonly used of mica.

DESCRIPTION OF PREFERRED EMBODIMENTS The mica utilized should be free from all foreign material. The small particles, obtained by passing the sheets or broken pieces of mica through screens of variable mesh size, are freely washed; in view of its incorporation in antiperspirant and deodorant products, the dry mica is then reduced to fine flakes or powder, even micronized, obtained by grinding, pulverizing or micronizing with the aid of equipment already known for numerous industrial applications.

In this manner, the flakes or fine powder obtained has a lamellar constitution with peripheral ridges and more or less sharp angles, having a structure which is. for example, cubic or polyhedric; the mica then possesses an exceptional covering power due to the lamellar disposition similar to fish scales, as well as remarkable thermal insulation properties. It should also be noted that it is the flexible consistency of this mica which confers on it antitraumatic properties on a microscopic scale.

The mica is practically insoluble and notably so in perspiration; it has a completely inert chemical affect, notably in contact with the constituents of perspiration.

it should be noted that the mica can also be utilized after having been expanded by heat or prefilmed with a binder.

The flakes or powder of mica can be incorporated in a paste, preferably non-allergenic, according to conventional formulas, as will be indicated'by examples later on. Mica flakes or powder can also be utilized as the principal ingredient of an antiperspirant or deodorant powder, by mixing these flakes or powders with other suitable substances, such as perfumes, coloring agents, etc. The mica flakes or powder can also be incorporated in solid sticks containing waxes or fatty substances to prepare antiperspirant deodorant sticks. Or they may be suspended in suitable liquids of different types, for example aqueous, alcoholic, fatty, carbohydrate or proteinic substances, or they may be incorporated in aerosols using different propellants conventional with this type of product. Instead of utilizing crushed or pulverized natural mica, there may be used, in the lamellar crystalline form which they have in a natural state, the silicates included in the composition of micas, and which are notably the double silicate of alumina and potash (muscovite), the double silicate of alumina and soda (paragonite), the triple silicate of alumina, potash and lithia (lepidolite), the double silicate of iron and lithia (zinnwaldite), the triple silicate of iron, magnesia and potash (biotite), phlogopite or the silicate of potash and of magnesia combined with the double fluoride of potash and magnesia, lepidomelane having a composition analogous to biotite but containing a higher percentage of iron in the ferric form, roscoelite which is analogous to muscovite but with about 30 percent of vanadium oxide, all substances whose density measured by the Mohs scale varies from 2 to 4.

The following examples illustrate the antiperspirant and deodorant products obtained according to the invention which should not be limited thereto:

EXAMPLE 1 To a paste composed of parts of glycerine, 54 parts of water, 1 part of gum tragacanth is added 30 parts of finely pulverized mica.

EXAMPLE 2 EXAMPLE 3 A solution of glycerinated gelatin is prepared with 7.5 parts of white gelatin, 120 parts of distilled water and 210 parts of glycerine. 36 parts of finely divided mica is incorporated in 120 parts of the above mixture.

EXAMPLE 4 To a solid base for deodorant sticks prepared in the usual manner, for example from cocoa butter, is incor porated the mica powder or silicates as filler in the amount of to percent for example.

EXAMPLE 5 The pulverized mica or fine flakes constitute the base of a antiperspirant or deodorant powder to which can be added other suitable materials.

EXAMPLE 6 The mica in particularly fine, micronized form is suspended in the form of an aerosol in a preparation composed of: Freon 1 l4 60 g., Freon 12 60 g., pure, washed, micronized muscovite mica g. in an aerosol bomb of 250 ml. capacity.

EX AM PLE 7 The mica in fine powder is suspended in the form of an aerosol in a preparation composed of: Freon l 14 30 g., Freon 12 30 g., ethyl alcohol g., muscovite mica as a fine powder 50 g. in an aerosol bomb of 250 ml. ca pacity.

The examples given above should not be considered limiting in their proportions which may be varied according to the object sought; in other words, other substanceswhich have not been mentioned can be added thereto, such as antiseptics, microbicides, astringents, perfumes, coloring agents, etc.

It should also be pointed out that the utilization, as additives to therapeutic products of a medicinal or pharmaceutical nature, of all or part of the composition of the type described above based on mica of any type or of an analogous type would not be outside the scope of the invention.

I claim:

1. An antiperspirant and deodorant composition which consists of a glycerine paste composed of glycerine, water and gum tragacanth and an active ingredient constituted by natural or synthetic mica particles combined with said paste in an amount of about 30 percent, said mica particles being finely pulverized and having a lamellar structure with peripheral ridges of different granular size.

2. A composition according to claim 1 wherein the mica is a natural or synthetic mica.

3. A composition according to claim 1 wherein the mica is selected from the group consisting of muscovite, paragonite, lepidolite, zinnwaldite, biotite, phlogopite, lepidomelane and roscoelite.

4. A composition according to claim 1 wherein the mica is reduced to flakes by sieving, is freely washed and dried and then is ground, pulverized or micronized.

5. A composition according to claim 1 wherein the mica particles are arranged in the form of overlapping 

1. AN ANTIPERSPIRANT AND DEODORANT COMPOSITION WHICH CONSISTS OF A GLYCERINE PASTE COMPOSED OF GLYCERINE, WATER AND GUM TRAGACANTH AND AN ACTIVE INGREDIENT CONSISTUTED BY NATURAL OR SYNTHETIC MICA PARTICLES COMBINED WITH SAID PASTE IN AN AMOUNT OF ABOUT 30 PERCENT, SAID MICA PARTICLES BEING FINELY PULVERIZED AND HAVING A LAMELLAR STRUCTURE WITH PERIPHERAL RIDGES OF DIFFERENT GRANULAR SIZE.
 2. A composition according to claim 1 wherein the mica is a natural or synthetic mica.
 3. A composition according to claim 1 wherein the mica is selected from the group consisting of muscovite, paragonite, lepidolite, zinnwaldite, biotite, phlogopite, lepidomelane and roscoelite.
 4. A composition according to claim 1 wherein the mica is reduced to flakes by sieving, is freely washed and dried and then is ground, pulverized or micronized.
 5. A composition according to claim 1 wherein the mica particles are arranged in the form of overlapping scales. 